Kaspersky Security Center 10

 
 
 

How to boot a computer in Safe (diagnostic) mode

ID: 5405
Complexity
2013 Apr 11
 
 
 
 


What is Safe Mode

How to boot in Safe Mode

What to do if the computer can only be booted in Normal Mode

What to do if the boot menu is not displayed after pressing the F8 button


What is Safe Mode

Safe Mode is a diagnostic mode of Windows operating systems allowing to identify errors related to software or hardware malfunctions.

Safe Mode enables only the minimum of components:

  • a minimum (basic) set of drivers;
  • standard system services.

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How to boot in Safe Mode
  1. Eject all diskettes and CD/DVD disks from computer drives;
  2. Click Start > Shut down > Restart;
  3. Press F8 before Windows logo appears on the display:
    • If you have more that one operating system installed on the computer, select the desired one and press F8;
    • In some hardware configurations, F8 serves for selecting a bootable physical drive. In this case, you should select the hard disk with the operating system installed, press Enter and immediately F8.


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What to do if the computer can only be booted in Normal Mode

In some cases the [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SafeBoot] registry branch may get damaged. This branch is responsible for booting the operating system in Safe Mode. When this branch is damaged, the computer may get BSOD (Blue Screen of Death) when attempting to boot in Safe Mode.

To restore the SafeBoot registry branch:

  • Download and extract the WinSafeBoot.zip archive on the problematic computer;
  • Run the .reg file that corresponds to the installed operating system:

    • Windows 2000 - SafeBootWin2000.reg;
    • Windows XP (32 and 64 bit) - SafeBootWinXP.reg;
    • Windows Vista (32 and 64 bit) - SafeBootWinVista.reg;
    • Windows 7(32 and 64 bit) - SafeBootWin7.reg;
    • Windows 2003 (32 and 64 bit) - SafeBootWin2003.reg;
    • Windows 2008 (32 and 64 bit) - SafeBootWin2008.reg.

  • Click OK.

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What to do if the boot menu is not displayed after pressing the F8 button

If the boot menu is not displayed for some reason after pressing the F8 button, and the system boots in Normal Mode:

  • For Windows XP / 2003:
    1. Click Start > Run > type in msconfig and click OK;
    2. Go to the BOOT.INI tab;
    3. Check the /SAFEBOOT box in the Boot Options section;



    4. Click OK;
    5. Select Restart when prompted.
Information  When done with troubleshooting in the Safe Mode, you should disable the /SAFEBOOT option and boot in Normal Mode.
  • For Windows Vista / 7 / 2008:
    1. Click Start > Run > type in msconfig and press Enter;
    2. Go to the Boot tab;
    3. Check the Safe boot box in the Boot Options section;



    4. Click OK;
    5. Select Restart when prompted.
Information When done with troubleshooting in the Safe Mode, you should disable the Safe boot option and boot in Normal Mode.

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Applies To:

  • Kaspersky Anti-Virus 6.0 R2 for Windows Workstations
  • Kaspersky Anti-Virus 6.0 R2 SOS
  • Kaspersky Anti-Virus 6.0 R2 for Windows Servers
  • Kaspersky Endpoint Security 8 for Windows (for workstations)
  • Kaspersky Endpoint Security 8 for Windows (for file server)
  • Kaspersky Security Center 9
  • Kaspersky Endpoint Security 10 for Windows (for workstations)
  • Kaspersky Endpoint Security 10 for Windows (for file servers)
  • Kaspersky Security Center 10